Home / 18,721,816.35-28,082,724.53-15,698,507.55

Finding the Fourth Proportional to 18,721,816.35, 28,082,724.53 and 15,698,507.55

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Solution

The fourth proportional to 18,721,816.35, 28,082,724.53 and 15,698,507.55 is: 23,547,761.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,816.35 : 28,082,724.53 = 15,698,507.55 : x
  2. Step 2: Convert to fraction form
    18,721,816.35/28,082,724.53 = 15,698,507.55/x
  3. Step 3: Cross multiply
    18,721,816.35x = 28,082,724.53 × 15,698,507.55
  4. Step 4: Simplify right side
    18,721,816.35x = 440,856,863,058,775.25
  5. Step 5: Solve for x
    x = 440,856,863,058,775.25/18,721,816.35
  6. Step 6: Final answer
    x = 23,547,761.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.